// Copyright 2025 RisingWave Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use risingwave_common::types::Fields;
use risingwave_frontend_macro::system_catalog;

/// The catalog `pg_namespace` stores namespaces. A namespace is the structure underlying SQL
/// schemas: each namespace can have a separate collection of relations, types, etc. without name
/// conflicts. Ref: [`https://www.postgresql.org/docs/current/catalog-pg-namespace.html`]
#[system_catalog(
    view,
    "pg_catalog.pg_namespace",
    "SELECT id AS oid, name AS nspname, owner AS nspowner, acl AS nspacl FROM rw_catalog.rw_schemas"
)]
#[derive(Fields)]
struct PgNamespace {
    oid: i32,
    nspname: String,
    nspowner: i32,
    nspacl: Vec<String>,
}
